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Renesas HZK4ALLTR-S-E
- Part No.:
- HZK4ALLTR-S-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZK4ALLTR-S-E.pdf
- Description:
- DIODE ZENER 0.25W
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Inventory:5,333
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Product details
Overview
HZK4ALLTR-S-E from Renesas Electronics is a silicon planar Zener diode optimized for hard-knee, low-noise voltage reference applications at low currents (IZ = 0.5 mA), with a nominal Zener voltage of 3.6 V (min 3.4 V, max 3.8 V), dynamic impedance ZZT of 2.0 Ω at IZT = 0.5 mA, and reverse current IR ≤ 100 nA at VR = 0.5 V. It is used in precision analog front-ends and sensor biasing circuits requiring stable low-current regulation.
For engineers reviewing the HZK4ALLTR-S-E datasheet, HZK4ALLTR-S-E pinout, HZK4ALLTR-S-E application, or HZK4ALLTR-S-E equivalent, key selection criteria include its low-noise hard-knee Zener behavior, LLD surface-mount package compatibility, temperature coefficient performance near zero crossing (~0 mV/°C at ~3.6 V), and suitability for space-constrained reference designs operating below 250 mW.
Technical Context
The HZK4ALLTR-S-E employs a silicon planar junction structure engineered to minimize dynamic impedance (ZZT = 2.0 Ω) and noise in the sub-mA current region-approximately one-tenth that of conventional Zeners. Its hard-knee characteristic ensures sharp turn-on with minimal voltage hysteresis below 0.5 mA.
Designed for low-power reference stability, it exhibits a Zener voltage temperature coefficient (γZ) near zero (≈0 mV/°C) at its nominal 3.6 V rating, confirmed by Fig.2 in REJ03G0183-0300 Rev.3.00. It operates within a junction temperature range of −55°C to +175°C and is rated for 250 mW power dissipation on PCB.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 3.4 V min to 3.8 V max at IZ = 0.5 mA - defines tight tolerance band for low-current reference accuracy |
| Dynamic Impedance (ZZT) | 2.0 Ω typical at IZT = 0.5 mA - enables stable output under small-signal load variations |
| Reverse Current (IR) | ≤100 nA max at VR = 0.5 V - ensures negligible leakage in high-impedance bias networks |
| Power Dissipation (Pd) | 250 mW max at Ta = 25°C - sets thermal design boundary for PCB trace width and copper area |
| Junction Temperature (Tj) | −55°C to +175°C - supports operation in industrial and automotive under-hood environments |
| Temperature Coefficient (γZ) | ≈0 mV/°C near 3.6 V - minimizes drift in precision reference applications over temperature |
Pinout & Package
Package: LLD (Leadless Low-profile Diode), JEITA code GLZZ0002ZA-A, Renesas code LLD/LLDV - surface-mount, 2-terminal, 2.5 mm × 3.0 mm footprint, 1.25–1.45 mm height, 0.027 g mass.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode Band) | Cathode | Connected to higher-potential node; reverse-biased terminal where Zener breakdown occurs |
| 2 | Anode | Connected to lower-potential node (typically ground or common return); completes bias path |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise hard-knee Zener | Dynamic impedance ≈2.0 Ω and noise ~1/10 standard zeners at 0.5 mA - improves SNR in sensor signal chains |
| LLD surface-mount package | 2.5 mm × 3.0 mm footprint with low profile - enables high-density PCB layouts and automated assembly |
| Zero-TC Zener voltage point | γZ ≈ 0 mV/°C near 3.6 V - eliminates first-order thermal drift in voltage references |
| Low reverse leakage | IR ≤ 100 nA at VR = 0.5 V - preserves accuracy in high-impedance divider and op-amp feedback networks |
Applications
| Industrial Sensor Biasing | Portable Instrument Reference |
|---|---|
Use Scenario: Providing stable excitation voltage to resistive bridge sensors (e.g., strain gauges, RTDs) in factory-floor condition monitoring systems. IC Role / Device Role / Timing Role: Low-noise Zener reference diode supplying regulated bias current to sensor elements. Use Value: Hard-knee behavior and 2.0 Ω ZZT maintain <±1 mV output variation across 10–100 µA load shifts, improving measurement repeatability. |
Use Scenario: Generating a precision 3.6 V reference for 16-bit ADCs in handheld multimeters and data loggers. IC Role / Device Role / Timing Role: Primary voltage reference source for analog-to-digital conversion subsystems. Use Value: Near-zero temperature coefficient ensures <±0.5 mV drift from −20°C to +70°C, meeting Class II portable instrument accuracy requirements. |
| Low-Power IoT Node Regulation | Medical Diagnostic Signal Conditioning |
Use Scenario: Supplying regulated bias to ultra-low-power op-amps and comparators in battery-operated environmental sensors. IC Role / Device Role / Timing Role: Low-current Zener shunt regulator maintaining stable node voltage at ~0.5 mA. Use Value: 100 nA IR and 250 mW Pd rating allow direct use with 100 kΩ series resistors from 5 V rails, extending battery life >2 years. |
Use Scenario: Setting precise thresholds in ECG front-end amplifier clamping and level-shifting stages. IC Role / Device Role / Timing Role: Noise-sensitive voltage clamp and reference element in analog signal path. Use Value: Low dynamic impedance suppresses broadband noise coupling into sensitive biopotential amplifiers, preserving ≥90 dB CMRR. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C3V6LT1G | Higher ZZT (10 Ω typ), wider VZ tolerance (3.42–3.78 V), SOT-23 package (larger footprint) | Higher noise and drift limit use in <16-bit precision systems | Acceptable for cost-sensitive consumer-grade references where ±2% VZ tolerance suffices |
| MMSZ4685T1G | Lower Pd (500 mW), higher IR (1 µA at VR = 1 V), same VZ range but no hard-knee optimization | Lacks low-noise hard-knee behavior; unsuitable for sub-100 µA bias stability | Preferred only when higher power margin is required and noise is not critical |
Compared with BZX84-C3V6LT1G and MMSZ4685T1G, the HZK4ALLTR-S-E delivers superior low-current stability (2.0 Ω vs. ≥10 Ω ZZT), lower leakage (100 nA vs. µA-level IR), and optimized zero-TC operation-making it the only choice for high-resolution analog systems demanding hard-knee Zener performance in compact LLD form.
Availability
HZK4ALLTR-S-E is available at Aetrix Electronics and suitable for industrial sensor biasing, portable instrument reference, and low-power IoT node regulation requiring stable component supply, consistent parametric performance, and long-term manufacturing continuity.
Supply support for HZK4ALLTR-S-E includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Renesas Electronics Corporation is a global semiconductor leader specializing in microcontrollers, analog, power, and timing solutions, with roots in NEC and Hitachi semiconductor divisions.
The HZK-LL Series was designed specifically for low-noise, hard-knee Zener reference applications in space-constrained, low-current analog systems-targeting precision sensor interfaces and portable instrumentation.
FAQ
What is the Zener voltage tolerance of HZK4ALLTR-S-E at 0.5 mA?
The HZK4ALLTR-S-E has a specified Zener voltage range of 3.4 V minimum to 3.8 V maximum when tested at IZ = 0.5 mA, yielding a ±0.2 V absolute tolerance or ±5.6% relative tolerance centered at 3.6 V. This tolerance is confirmed in the Electrical Characteristics table of REJ03G0183-0300 Rev.3.00 and applies strictly under DC test conditions per Note 1.
Does HZK4ALLTR-S-E support operation above 100°C ambient temperature?
Yes, the HZK4ALLTR-S-E is rated for storage from −55°C to +175°C and junction temperature up to +175°C. Its derated power dissipation curve (Fig.3) shows usable operation up to +125°C ambient at reduced Pd, and full 250 mW capability at Ta ≤ 25°C. Thermal design must ensure Tj remains within limits using appropriate PCB copper area.
Is HZK4ALLTR-S-E RoHS compliant?
Yes, HZK4ALLTR-S-E complies with the EU RoHS Directive, as confirmed by Renesas' environmental compliance documentation and material declarations. The device contains no lead, mercury, cadmium, hexavalent chromium, PBB, or PBDE above threshold limits, and is suitable for environmentally regulated commercial and industrial applications.
What does the "TR-S-E" suffix indicate in HZK4ALLTR-S-E?
The "TR-S-E" suffix denotes tape-and-reel packaging (TR), standard grade (S), and lead-free, RoHS-compliant finish (E). This matches Renesas' standard part numbering convention for LLD-packaged devices and confirms the part is supplied in 3,000-unit reels compatible with high-speed SMT placement equipment.
How does the hard-knee characteristic of HZK4ALLTR-S-E improve reference stability?
The hard-knee behavior of HZK4ALLTR-S-E-achieved via planar junction optimization-produces a sharp, low-hysteresis transition into Zener conduction below 0.5 mA. This minimizes voltage variation across small current changes (e.g., ΔIZ = ±10 µA), directly enhancing stability in high-impedance bias networks where conventional Zeners exhibit soft, noisy turn-on.
HZK4ALLTR-S-E Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- -
- Tolerance:
- -
- Power - Max:
- -
- Impedance (Max) (Zzt):
- -
- Current - Reverse Leakage @ Vr:
- -
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
HZK4ALLTR-S-E FAQ
1.How can I place an order for HZK4ALLTR-S-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZK4ALLTR-S-E on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for HZK4ALLTR-S-E reliable?
The price and inventory of HZK4ALLTR-S-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZK4ALLTR-S-E is usually 5 days.
3.What payment methods are accepted for HZK4ALLTR-S-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZK4ALLTR-S-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZK4ALLTR-S-E?
HZK4ALLTR-S-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZK4ALLTR-S-E order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for HZK4ALLTR-S-E?
For technical support, including HZK4ALLTR-S-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZK4ALLTR-S-E requirements.
6.How does Aetrix verify that HZK4ALLTR-S-E is sourced from the original manufacturer or authorized distributors?
All HZK4ALLTR-S-E products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that HZK4ALLTR-S-E meets industry standards.
7.What is the process for return or replacement of HZK4ALLTR-S-E?
All HZK4ALLTR-S-E units undergo pre-shipment inspection (PSI). If there is an issue with HZK4ALLTR-S-E, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The HZK4ALLTR-S-E part is unused and in its original packaging.
Return procedure for HZK4ALLTR-S-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HZK4ALLTR-S-E Tags
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MM5Z5V1ST1G
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